Fixed ComboBox in Create and Edit Geometries WinUI sample (#1576)

Author: prathameshnarkhede

src/WinUI/ArcGIS.WinUI.Viewer/Samples/Geometry/CreateAndEditGeometries/CreateAndEditGeometries.xaml

@@ -65,7 +65,6 @@
                       Grid.ColumnSpan="2"
                       HorizontalAlignment="Stretch"
                       Background="White"
-                      DisplayMemberPath="Key"
                       SelectionChanged="ToolComboBox_SelectionChanged"
                       ToolTipService.ToolTip="Tools" />
             <Border Grid.Row="3"

src/WinUI/ArcGIS.WinUI.Viewer/Samples/Geometry/CreateAndEditGeometries/CreateAndEditGeometries.xaml.cs

@@ -107,7 +107,7 @@ private void Initialize()
             MyMapView.GeometryEditor = _geometryEditor;
 
             // Create vertex and freehand tools for the combo box.
-            ToolComboBox.ItemsSource = _toolDictionary = new Dictionary<string, object>()
+            _toolDictionary = new Dictionary<string, object>()
             {
                 { "Vertex Tool", new VertexTool() },
                 { "Reticle Vertex Tool", new ReticleVertexTool() },
@@ -118,6 +118,8 @@ private void Initialize()
                 { "Triangle Shape Tool", ShapeTool.Create(ShapeToolType.Triangle) }
             };
 
+            ToolComboBox.ItemsSource = _toolDictionary.Keys;
+
             // Have the vertex tool selected by default.
             ToolComboBox.SelectedIndex = 0;
 
@@ -196,7 +198,8 @@ private void PolygonButton_Click(object sender, RoutedEventArgs e)
         private void ToolComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
         {
             // Set the geometry editor tool based on the new selection.
-            _geometryEditor.Tool = ((KeyValuePair<string, object>)ToolComboBox.SelectedItem).Value as GeometryEditorTool;
+            GeometryEditorTool tool = _toolDictionary[ToolComboBox.SelectedItem.ToString()] as GeometryEditorTool;
+            _geometryEditor.Tool = tool;
 
             // Account for case when vertex tool is selected and geometry editor is started with a polyline or polygon geometry type.
             // Ensure point and multipoint buttons are only enabled when the selected tool is a vertex tool.